Antenna, antenna array and electronic equipment

Abstract

The utility model provides an antenna, an antenna array and electronic equipment, and belongs to the technical field of communication. The antenna disclosed by the utility model comprises a first substrate, a plurality of radiation structures, a first feed structure and a second feed structure, the radiation structure comprises a first balun assembly, a second balun assembly and a radiation unit. The first balun assembly and the second balun assembly are arranged in a crossed manner, and the first balun assembly and the second balun assembly are mounted on the first substrate; the radiation unit is arranged at one end, deviating from the first substrate, of the first balun assembly and the second balun assembly; the first feed structure feeds the radiation unit through the first balun assembly, the second feed structure feeds the radiation unit through the second balun assembly, and the feed directions of the first feed structure and the second feed structure are different.

Description

TECHNICAL FIELD

[0001] The present disclosure belongs to the technical field of communication, and particularly relates to an antenna, an antenna array and an electronic device. BACKGROUND

[0002] As a new type of beautifying antenna, the transparent antenna has natural excellent concealment due to its high light transmission property. Meanwhile, the transparent antenna is gradually introduced into special application scenarios such as vehicle communication and building signal coverage due to its radiation performance which is not inferior to that of traditional antennas. SUMMARY

[0003] The present disclosure aims to at least solve one of the technical problems existing in the prior art, and provides an antenna, an antenna array and an electronic device.

[0004] An antenna provided by an embodiment of the present disclosure comprises a first substrate, a plurality of radiation structures, a first feeding structure and a second feeding structure; wherein,

[0005] The radiation structure comprises a first balun assembly and a second balun assembly, and a radiation unit; the first balun assembly and the second balun assembly are cross arranged, and are both mounted on the first substrate; the radiation unit is arranged at one end of the first balun assembly and the second balun assembly away from the first substrate;

[0006] The first feeding structure feeds the radiation unit through the first balun assembly, the second feeding structure feeds the radiation unit through the second balun assembly, and the feeding directions of the first feeding structure and the second feeding structure are different.

[0007] The first balun assembly comprises a first substrate, a first balun feed line arranged on the first substrate, and a first reference electrode arranged on a side of the first substrate away from the first balun feed line layer; the second balun assembly comprises a second substrate, a second balun feed line arranged on the second substrate, and a second reference electrode arranged on a side of the second substrate away from the second balun feed line layer; and the first substrate and the second substrate are cross arranged.

[0008] The first balun feed line is arranged on a first base material, the first base material is attached to the first substrate; the first reference electrode is arranged on a second base material, the second base material is attached to the first substrate;

[0009] The second balun feed line is arranged on a third base material, the third base material is attached to the second substrate; the second reference electrode is arranged on a fourth base material, the fourth base material is attached to the second substrate.

[0010] The first balun assembly and the second balun assembly are both printed circuit boards; first and second protective layers are respectively arranged on two opposite sides of the first balun assembly along the thickness direction of the first balun assembly; third and fourth protective layers are respectively arranged on two opposite sides of the second balun assembly along the thickness direction of the second balun assembly.

[0011] The materials of the first protective layer, the second protective layer, the third protective layer and the fourth protective layer all include white oil or green oil.

[0012] The antenna comprises a second substrate, the first feeding structure comprises a first power divider arranged on the second substrate and a third reference electrode arranged on a side of the second substrate away from the first power divider; the second feeding structure comprises a second power divider arranged on the second substrate and a fourth reference electrode arranged on a side of the second substrate away from the second power divider; the third reference electrode and the fourth reference electrode are electrically connected.

[0013] One first feeding end of the first power divider is configured to feed one of the first balun assemblies; one first feeding end of the second power divider is configured to feed one of the second balun assemblies.

[0014] The extension direction of the plane in which the second substrate is located is different from the extension direction of the plane in which the first substrate is located.

[0015] The first substrate and the second substrate are shared, the first reference electrode of the first balun assembly is connected with the third reference electrode through a first via hole penetrating through the first substrate; the second reference electrode of the second balun assembly is connected with the third reference electrode through a first via hole penetrating through the first substrate.

[0016] The radiation structure further comprises first and second transmission lines arranged on the first substrate.

[0017] One first feeding end of the first power divider is connected with a first balun feeding line of the first balun assembly through the first transmission line; one first feeding end of the second power divider is connected with a second balun feeding line of the second balun assembly through the second transmission line.

[0018] The first feeding end of the first power divider is connected with the first transmission line through a first connecting assembly, and the first feeding end of the second power divider is connected with the second transmission line through a second connecting assembly.

[0019] The first transmission line and the second transmission line comprise the conductive mesh structure.

[0020] The first balun assembly and the second balun assembly are arranged in a cross manner, the first reference electrode of the first balun assembly is divided into a first sub-reference electrode and a second sub-reference electrode, and the second reference electrode of the second balun assembly is divided into a third sub-reference electrode and a fourth sub-reference electrode.

[0021] The radiation unit comprises a third substrate and a first radiation part, a second radiation part, a third radiation part and a fourth radiation part arranged on a side of the third substrate away from the first substrate;

[0022] The first sub-reference electrode is connected with the first radiation part through a third via hole penetrating through the third substrate and the first radiation part; the second sub-reference electrode is connected with the second radiation part through a fourth via hole penetrating through the third substrate and the second radiation part; the third sub-reference electrode is connected with the third radiation part through a fifth via hole penetrating through the third substrate and the third radiation part; and the fourth sub-reference electrode is connected with the fourth radiation part through a sixth via hole penetrating through the third substrate and the fourth radiation part.

[0023] The first radiation part, the second radiation part, the third radiation part and the fourth radiation part all comprise the conductive grid structure.

[0024] The first radiation part, the second radiation part, the third radiation part and the fourth radiation part are arranged on a fifth substrate; and the fifth substrate is attached to the third substrate.

[0025] The first radiation part, the second radiation part, the third radiation part and the fourth radiation part all comprise a polygon in the orthographic projection on the third substrate; the polygon comprises a first side and a second side arranged oppositely, a third side and a fourth side arranged oppositely, a first connecting side connecting the first side and the third side, and a second connecting side connecting the second side and the fourth side.

[0026] The included angle formed by the first connecting side and the first side, the included angle formed by the first connecting side and the third side, the included angle formed by the second connecting side and the second side, and the included angle formed by the second connecting side and the fourth side are all obtuse angles; or

[0027] The first connecting side and the second connecting side are arc lines.

[0028] At least part of the adjacent radiation units are provided with a separation assembly.

[0029] The antenna further comprises a radome, and the first substrate, the plurality of radiation structures, the first feeding structure and the second feeding structure are all arranged in the radome.

[0030] The conductive grid includes a plurality of first conductive lines and second conductive lines arranged in a cross manner; the line width of the first conductive lines and the second conductive lines is 2-30 μm, the line spacing is 5-200 μm, and the line thickness is 1-10 μm.

[0031] The present disclosure provides an antenna array including a plurality of antennas, wherein the antenna units employ the above-described antenna.

[0032] The present disclosure provides an electronic device including the above-described antenna array. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is a top view of an antenna according to an embodiment of the present disclosure.

[0034] Figure 2 It is an exploded view of a radiation structure according to an embodiment of the present disclosure.

[0035] Figure 3 It is a front view of a radiation structure fixed to a first substrate according to an embodiment of the present disclosure.

[0036] Figure 4 It is a top view of a first feeding structure and a second feeding structure according to an embodiment of the present disclosure.

[0037] Figure 5 It is a sectional view of a first feeding structure / second feeding structure according to an embodiment of the present disclosure.

[0038] Figure 6 It is a top view of a conductive grid structure according to an embodiment of the present disclosure.

[0039] Figure 7 It is a sectional view of a first balun assembly according to an embodiment of the present disclosure.

[0040] Figure 8 It is a top view of one side of a first balun assembly according to an embodiment of the present disclosure.

[0041] Figure 9 It is a top view of the other side of a first balun assembly according to an embodiment of the present disclosure.

[0042] Figure 10 It is a sectional view of a second balun assembly according to an embodiment of the present disclosure.

[0043] Figure 11 It is a top view of one side of a second balun assembly according to an embodiment of the present disclosure.

[0044] Figure 12 It is a top view of the other side of a second balun assembly according to an embodiment of the present disclosure.

[0045] Figure 13A top view of a first substrate of an embodiment of the present disclosure.

[0046] Figure 14 A top view of a radiation unit of an embodiment of the present disclosure.

[0047] Figure 15 A top view of a radiation unit of an embodiment of the present disclosure.

[0048] Figure 16 A S-parameter characteristic diagram of a radiation structure of an embodiment of the present disclosure.

[0049] Figure 17 A vertical E-plane pattern at a center frequency of a radiation structure of an embodiment of the present disclosure.

[0050] Figure 18 A cross-polarization ratio at a center frequency of a radiation structure of an embodiment of the present disclosure.

[0051] Figure 19 A S11 characteristic diagram of a one-to-five unequal power divider of an embodiment of the present disclosure.

[0052] Figure 20 A power distribution characteristic diagram of a one-to-five unequal power divider of an embodiment of the present disclosure.

[0053] Figure 21 A phase difference characteristic diagram between outputs of a one-to-five unequal power divider of an embodiment of the present disclosure.

[0054] Figure 22 A S-parameter characteristic diagram of an antenna of an embodiment of the present disclosure.

[0055] Figure 23 A sectional view of a first balun assembly of an embodiment of the present disclosure.

[0056] Figure 24 A sectional view of a second balun assembly of an embodiment of the present disclosure.

[0057] Figure 25A A top view of an antenna introduction isolation assembly of an embodiment of the present disclosure.

[0058] Figure 25B A top view of another antenna introduction isolation assembly of an embodiment of the present disclosure.

[0059] Figure 26 A front and back isolation performance comparison diagram of an antenna introduction isolation assembly of an embodiment of the present disclosure.

[0060] Figure 27 A front view of an antenna of an embodiment of the present disclosure.

[0061] Figure 28A A schematic diagram of an antenna array of an embodiment of the present disclosure.

[0062] Figure 28B A schematic diagram of another antenna array of an embodiment of the present disclosure.

[0063] Figure 29 A gain characteristic diagram of an antenna array of an embodiment of the present disclosure. DETAILED DESCRIPTION

[0064] In order to enable persons skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0065] Unless otherwise defined, technical terms or scientific terms used in the present disclosure shall have the ordinary meaning understood by a person skilled in the art to which the present disclosure pertains. The terms "first", "second", and similar terms used in the present disclosure do not indicate any order, number, or importance, but are only used to distinguish different components. Similarly, the terms "one", "a", or "the" and similar terms do not indicate a quantity limitation, but indicate the presence of at least one. The terms "include", "contain", and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right", and the like are only used to indicate relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships can also change accordingly.

[0066] Embodiments of the present disclosure provide an antenna, in particular a transparent antenna, which can be applied in, but not limited to, cars, trains (including high-speed trains), airplanes, buildings, and the like. For example, the transparent antenna of embodiments of the present disclosure is a transparent wide-angle antenna used for inter-building communication. The structure of the transparent antenna of embodiments of the present disclosure will be described in detail below.

[0067] Figure 1 A top view of an antenna of an embodiment of the present disclosure; Figure 2 An exploded view of the radiation structure 2 of an embodiment of the present disclosure; Figure 3 A front view of the radiation structure 2 fixed with the first substrate 1 of an embodiment of the present disclosure; Figure 4 A top view of the first feeding structure 3 and the second feeding structure 4 of an embodiment of the present disclosure; Figure 5 A sectional view of the first feeding structure 3 / second feeding structure 4 of an embodiment of the present disclosure; Figure 6 A top view of the conductive mesh structure of an embodiment of the present disclosure; Figure 7 A sectional view of the first balun assembly 21 of an embodiment of the present disclosure; Figure 8A top view of one side of the first balun assembly 21 of the embodiment of the present disclosure; Figure 9 A top view of the other side of the first balun assembly 21 of the embodiment of the present disclosure; Figure 10 A sectional view of the second balun assembly 22 of the embodiment of the present disclosure; Figure 11 A top view of one side of the second balun assembly 22 of the embodiment of the present disclosure; Figure 12 A top view of the other side of the second balun assembly 22 of the embodiment of the present disclosure. Referring to Figures 1-12 As shown, the embodiment of the present disclosure provides a transparent antenna, which comprises a first substrate 1, a plurality of radiation structures 2, a first feeding structure 3 and a second feeding structure 4 arranged on the first substrate 1. The first radiation structure 2 comprises a first balun assembly 21 and a second balun assembly 22 arranged in cross, and a radiation unit 23. The first feeding structure 3 feeds the radiation unit 23 through the first balun assembly 21, and the second feeding structure 4 feeds the radiation unit 23 through the second balun assembly 22. The feeding directions of the first feeding structure 3 and the second feeding structure 4 are different, for example, the first feeding structure 3 and the second feeding structure 4 can provide ±45° polarization feeding for the radiation unit 23.

[0068] Referring to Figures 2-3 , 7-12, the first balun assembly 21 of the embodiment of the present disclosure comprises a first substrate 211, a first balun feed line 212 arranged on the first substrate 211, and a first reference electrode 213 arranged on the side of the first substrate 211 away from the first balun feed line 212. The second balun assembly 22 comprises a second substrate 221, a second balun feed line 222 arranged on the second substrate 221, and a second reference electrode 223 arranged on the side of the second substrate 221 away from the second balun feed line 222. The first substrate 211 and the second substrate 221 are arranged in cross, and the planes in which the first substrate 211 and the second substrate 221 are arranged are both at a certain angle with the plane in which the first substrate 1 is arranged. For example, the first substrate 211 and the second substrate 221 are arranged orthogonally, and the plane in which the first substrate 211 is arranged is perpendicular to the plane in which the first substrate 1 is arranged, and the plane in which the second substrate 221 is arranged is perpendicular to the plane in which the first substrate 1 is arranged.

[0069] The first feeding structure 3 of the embodiment of the present disclosure comprises a first power divider and a third reference electrode, and the second feeding structure 4 comprises a second power divider and a fourth reference electrode. The first feeding structure 3 and the second feeding structure 4 can be integrated on a separate dielectric board, for example, the first power divider and the second power divider of the first feeding structure 3 are arranged on a second substrate 5, and the third reference electrode of the first feeding structure 3 and the fourth reference electrode of the second feeding structure 4 are arranged on the surface of the second substrate 5 away from the first power divider. At this time, the third reference electrode and the fourth reference electrode can be connected as an integral structure.

[0070] Of course, the first feeding structure 3 and the second feeding structure 4 can also be integrated on the first substrate 1, at this time, the first power divider and the second power divider of the first feeding structure 3 are arranged on the first substrate 1, and the third reference electrode of the first feeding structure 3 and the fourth reference electrode of the second feeding structure 4 are arranged on the surface of the first substrate 1 away from the first power divider. In this case, the third reference electrode and the fourth reference electrode can be connected into a planar reference electrode arranged on the side of the first substrate 1 away from the radiation unit 23. Further, the first reference electrode 213 of the first balun assembly 21 can be connected with the planar reference electrode through the first via hole 11 penetrating through the first substrate 1 at least, and the second reference electrode 223 of the second balun assembly 22 can be connected with the planar reference electrode through the second via hole 12 penetrating through the first substrate 1 at least.

[0071] The first power divider in the first feeding structure 3 and the second power divider in the second feeding structure 4 each include a second feeding port and a plurality of first feeding ports, the first feeding ports of the first power divider are connected with the first balun feed lines 212 of the first balun assembly 21 one by one, and the first feeding ports of the second power divider are connected with the second balun feed lines 222 of the second balun assembly 22 one by one. The first reference electrode 213 of the first balun assembly 21 and the second reference electrode 223 of the second balun assembly 22 are each connected with the radiation unit 23. In this case, the first feeding ports of the first power divider of the first feeding structure 3 feed the first balun feed lines 212, the first feeding ports of the second power divider of the second feeding structure 4 feed the second balun feed lines 222, and then the radiation unit 23 is excited through the first balun feed lines 212 and the second balun feed lines 222 to radiate signals, through this structure, the radiation efficiency can be effectively improved, and the antenna has high gain.

[0072] The first feeding structure 3 and the second feeding structure 4 in the embodiments of the present disclosure adopt metal materials, for example, copper. In order to improve the conductivity, the first feeding structure 3 and the second feeding structure 4 can each adopt a solid conductive structure.

[0073] In some examples, the first feeding structure 3 and the second feeding structure 4 in the embodiments of the present disclosure can also adopt a conductive grid structure, which is helpful for the transparent design of the antenna, and the antenna of the embodiments of the present disclosure has the characteristics of high concealment and beauty.

[0074] It should be noted that in this embodiment, the antenna includes five radiating structures 2 as an example, and the corresponding first and second power dividers are both 1-to-5 power dividers, that is, they have five first feed ports. It should be understood that it is also feasible for the antenna to have four, six, or other numbers of radiating structures 2. When there are four radiating structures 2, the first and second power dividers are both 1-to-4 power dividers, that is, they have four first feed ports. When there are six radiating structures 2, the first and second power dividers are both 1-to-6 power dividers, that is, they have six first feed ports.

[0075] The transparent antenna in this embodiment can be a receiving antenna, a transmitting antenna, or a transceiver antenna that simultaneously transmits and receives signals. In the following description, a transparent antenna is used as an example of a transmitting antenna. The first reference electrode 213 and the second reference electrode 223 in this embodiment are both, but are not limited to, ground electrodes. The third reference electrode and the fourth reference electrode are connected as a single unit and are connected to the first reference electrode 213 and the second reference electrode 223; therefore, both are also ground electrodes.

[0076] In some examples, refer to Figure 6 As shown, the conductive mesh structure may include multiple first conductive lines and second conductive lines arranged in a crisscrossing pattern. Each first conductive line is arranged side-by-side along a first direction and extends along a second direction; each second conductive line is arranged side-by-side along the first direction and extends along a third direction. For example, the extension directions of the first and second conductive lines in the conductive mesh structure can be perpendicular to each other, forming a square or rectangular cutout. Alternatively, the extension directions of the first and second conductive lines in the conductive mesh structure can be non-perpendicular, for example, the angle between the extension directions of the first and second conductive lines is 45°, forming a rhomboid cutout. The ends of the first and second conductive lines in the conductive mesh structure are connected together, meaning the outer perimeter of the metal mesh is a closed loop structure. In actual products, the ends of the first and second conductive lines in the conductive mesh structure may also be unconnected, meaning the outer perimeter of the conductive mesh structure is radial. In this embodiment, the conductive mesh structure can achieve a light transmittance of approximately 70%-88% for the transparent antenna.

[0077] In some examples, the line width, line thickness, and line spacing of the first and second conductive lines in the conductive mesh structure are preferably the same, but they can also be different. For example, the line width W1 of the first and second conductive lines is about 2-30 μm, the line spacing W2 is about 5-200 μm, and the line thickness is about 1-10 μm.

[0078] Further, the conductive mesh structure can be formed on a flexible substrate, and the material of the flexible substrate includes but is not limited to polyethylene terephthalate (PET) or polyimide (PI), etc. The conductive mesh structure and the flexible substrate are formed as an integrated structure, and are attached to the corresponding medium substrate by OCA optical adhesive.

[0079] Specifically, when the first feeding structure 3 and the second feeding structure 4 are integrated on the second substrate 5, the first power divider of the first feeding structure 3 and the second power divider of the second feeding structure 4 can be formed on a flexible substrate, and then attached to the second substrate 5 by OCA optical adhesive; the third reference electrode of the first feeding structure 3 and the fourth reference electrode of the second feeding structure 4 are connected as an integrated structure to form a flexible substrate, and then attached to the second substrate 5 by OCA optical adhesive. Similarly, when the first feeding structure 3 and the second feeding structure 4 are integrated on the first substrate 1, the first feeding structure 3 and the second feeding structure 4 can also be formed in the above-mentioned manner, and then attached to the first substrate 1 by OCA optical adhesive.

[0080] In some examples, the first feeding port of the first power divider in the embodiment of the present disclosure can be connected with the first balun feed line 212 through the first transmission line 6. The first balun feed line 212 and the first transmission line 6 can be fixed together by welding. The first feeding port of the first power divider can be connected with the first transmission line 6 through the first connecting component, and the first connecting component includes but is not limited to a copper column. Similarly, the first feeding port of the second power divider can be connected with the second balun feed line 222 through the second transmission line 7. The second balun feed line 222 and the second transmission line 7 can be fixed together by welding. The first feeding port of the second power divider can be connected with the second transmission line 7 through the second connecting component, and the second connecting component includes but is not limited to a copper column.

[0081] Further, in order to provide the transparency of the antenna, the first transmission line 6 and the second transmission line 7 can also adopt the conductive mesh structure described above.

[0082] Continuing to refer to Figures 1-12 The embodiment of the present disclosure provides an exemplary antenna, which includes the first substrate 1 described above, a plurality of radiation structures 2, a first feeding structure 3 and a second feeding structure 4 arranged on the first substrate 1. The first balun component 21 and the second balun component 22 can also adopt a transparent structure, that is, the first balun component 21 and the second balun component 22 both include a conductive mesh structure.

[0083] Specifically, the first balun assembly 21 includes a first substrate 211, a first balun feed line 212 disposed on the first substrate 211, and a first reference electrode 213 disposed on a side of the first substrate 211 away from the first balun feed line 212. The second balun assembly 22 includes a second substrate 221, a second balun feed line 222 disposed on the second substrate 221, and a second reference electrode 223 disposed on a side of the second substrate 221 away from the second balun feed line 222. The first reference electrode 213 covers the first substrate 211 in orthographic projection on a plane in which the first substrate 211 lies, and the second reference electrode 223 covers the second substrate 221 in orthographic projection on a plane in which the second substrate 221 lies. The first substrate 211 and the second substrate 221 are disposed in a cross manner. In this case, the first balun feed line 212, the second balun feed line 222, the first reference electrode 213, and the second reference electrode 223 adopt a conductive mesh structure, so that the light transmittance of the first balun assembly 21 and the second balun assembly 22 can be improved to realize the transparency of the first balun assembly 21 and the second balun assembly 22.

[0084] In the case where the first balun feed line 212, the second balun feed line 222, the first reference electrode 213, and the second reference electrode 223 adopt the conductive mesh structure, the first balun feed line 212 can be formed on a first base material, the first reference electrode 213 can be formed on a second base material, the second balun assembly 22 can be formed on a third base material, and the second reference electrode 223 can be formed on a fourth base material. The first base material, the second base material, the third base material, and the fourth base material can all adopt the flexible material described above, such as a PET base material. The first base material and the second base material can be attached to the first substrate 211 on two sides thereof in the thickness direction by OCA glue, and the third base material and the fourth base material can be attached to the second substrate 221 on two sides thereof in the thickness direction by OCA glue. The first substrate 211 and the second substrate 221 in the embodiments of the present disclosure include but are not limited to polycarbonate plastic (Polycarbonate; PC), cycloolefin polymer plastic (Copolymers of Cycloolefin; COP), or acrylic / organic glass (Polymethyl Methacrylate; PMMA).

[0085] Further, the planes in which the first substrate 211 and the second substrate 221 are located have a certain included angle, for example, the included angle between the planes in which the first substrate 211 and the second substrate 221 are located is 90°, that is, the first substrate 211 and the second substrate 221 are arranged orthogonally. The planes in which the first substrate 211 and the second substrate 221 are located also have a certain included angle with the plane in which the first substrate 1 is located, for example, the plane in which the first substrate 211 is located is arranged vertically with the plane in which the first substrate 1 is located, and correspondingly, the plane in which the second substrate 221 is located is also arranged vertically with the plane in which the first substrate 1 is located. In the embodiments of the present disclosure, only the first substrate 211 and the second substrate 221 are arranged orthogonally, and the planes in which the first substrate 211 and the second substrate 221 are located are both vertical with the plane in which the first substrate 1 is located.

[0086] With continuous reference to Figures 7-8 , 10-11, the first substrate 211 has a first opening extending along the thickness direction of the first substrate 1, and the second substrate 221 has a second opening extending along the thickness direction of the first substrate 1, the first substrate 211 is fixed with the second substrate 221 through the first opening, and the second substrate 221 is fixed with the first substrate 211 through the second opening, so that the first substrate 211 and the second substrate 221 are arranged orthogonally. Since the first substrate 211 and the second substrate 221 are arranged orthogonally, the second substrate 221 divides the first substrate 211 into a first sub-board 2111 and a second sub-board 2112, and the first substrate 211 divides the second substrate 221 into a third sub-board 2211 and a fourth sub-board 2212. The part of the first reference electrode 213 on the first sub-board 2111 is referred to as a first sub-reference electrode 2131, and the part of the first reference electrode 213 on the second sub-board 2112 is referred to as a second sub-reference electrode 2132; the part of the second reference electrode 223 on the third sub-board 2211 is referred to as a third sub-reference electrode 2231, and the part of the second reference electrode 223 on the fourth sub-board 2212 is referred to as a fourth sub-reference electrode 2232.

[0087] Since the two ends of the first balun assembly 21 and the second balun assembly 22 are fixed with the first substrate 1 and the radiation unit 23 respectively, the first connecting portion 214 and the second connecting portion 215 can be arranged at the two ends of the first sub-plate 2111 along the thickness direction of the first substrate 1 respectively, the third connecting portion 216 and the fourth connecting portion 217 can be arranged at the two ends of the second sub-plate 2112 along the thickness direction of the first substrate 1 respectively, the fifth connecting portion 224 and the sixth connecting portion 225 can be arranged at the two ends of the third sub-plate 2211 along the thickness direction of the first substrate 1 respectively, and the seventh connecting portion 226 and the eighth connecting portion 227 can be arranged at the two ends of the fourth sub-plate 2212 along the thickness direction of the first substrate 1 respectively. Correspondingly, four through holes corresponding to the first connecting portion 214, the third connecting portion 216, the fifth connecting portion 224 and the seventh connecting portion 226 can be arranged on the first substrate 1, and the first connecting portion 214, the third connecting portion 216, the fifth connecting portion 224 and the seventh connecting portion 226 are fixed with the first substrate 1 through the four through holes arranged on the first substrate 1 respectively. Similarly, four through holes corresponding to the second connecting portion 215, the fourth connecting portion 217, the sixth connecting portion 225 and the eighth connecting portion 227 can be arranged on the radiation unit 23, and the second connecting portion 215, the fourth connecting portion 217, the sixth connecting portion 225 and the eighth connecting portion 227 are fixed with the radiation unit 23 through the four through holes arranged on the radiation unit 23 respectively.

[0088] Further, Figure 13 is a top view of the first substrate 1 of the embodiment of the present disclosure; as Figure 13 shown, when the surface of the first substrate 1 away from the radiation unit 23 is provided with a planar reference electrode, at this time, the first reference electrode 213 and the second reference electrode 223 can be connected with the planar reference electrode through the first through hole 11 and the second through hole 12 penetrating the first substrate 1. That is, the four through holes of the first substrate 1 include two first through holes 11 and two second through holes 12, wherein the two first through holes 11 are arranged corresponding to the first connecting portion 214 and the third connecting portion 216 respectively, and the two second through holes 12 are arranged corresponding to the fifth connecting portion 224 and the seventh connecting portion 226 respectively.

[0089] In some examples, Figure 14 is a top view of the radiation unit 23 of the embodiment of the present disclosure; as Figure 14As shown, the radiation unit 23 includes a third substrate 231 and four radiation portions arranged on the side of the third substrate 231 away from the first substrate 1, which are respectively a first radiation portion 232a, a second radiation portion 232b, a third radiation portion 232c, and a fourth radiation portion 232d. The first radiation portion 232a, the second radiation portion 232b, the third radiation portion 232c, and the fourth radiation portion 232d can be arranged in an array. Among them, the first radiation portion 232a is electrically connected with the first sub-reference electrode 2131, the second radiation portion 232b is electrically connected with the second sub-reference electrode 2132, the third radiation portion 232c is electrically connected with the third sub-reference electrode 2231, and the fourth radiation portion 232d is electrically connected with the fourth sub-reference electrode 2232.

[0090] In this case, the four through holes on the radiation unit 23 are respectively a third through hole 233 penetrating through the third substrate 231 and the first radiation portion 232a, a fourth through hole 234 penetrating through the third substrate 231 and the second radiation portion 232b, a fifth through hole 235 penetrating through the third substrate 231 and the third radiation portion 232c, and a sixth through hole 236 penetrating through the third substrate 231 and the fourth radiation portion 232d. At this time, the first sub-reference electrode 2131 is connected with the first radiation portion 232a through the third through hole 233, and the two can be connected in a soldering manner. Similarly, the second sub-reference electrode 2132 is connected with the second radiation portion 232b through the fourth through hole 234, and the two can be connected in a soldering manner. The third sub-reference electrode 2231 is connected with the third radiation portion 232c through the fifth through hole 235, and the two can be connected in a soldering manner. The fourth sub-reference electrode 2232 is connected with the fourth radiation portion 232d through the sixth through hole 236, and the two can be connected in a soldering manner.

[0091] In some examples, the first radiation portion 232a, the second radiation portion 232b, the third radiation portion 232c, and the fourth radiation portion 232d are spliced to form a radiation surface. The first radiation portion 232a, the second radiation portion 232b, the third radiation portion 232c, and the fourth radiation portion 232d include but are not limited to polygons (such as squares, rectangles, hexagons), circles, and the like.

[0092] In one example, Figure 15 is a top view of the radiation portion of the embodiment of the present disclosure; as Figure 15As shown, each of the radiation units 23 is a polygon, which can include oppositely arranged first and second sides S1 and S2, oppositely arranged third and fourth sides S3 and S4, the second side S2 and the third side S3 being connected, the first side S1 and the third side S3 being connected by a first connecting side S5, and the second side S2 and the fourth side S4 being connected by a second connecting side S6. The second side S2 and the third side S3 of the four radiation units 23 are connected to form an included angle of 90° and are arranged clockwise. The first connecting side S5 and the second connecting side S6 can be straight sides or arc sides. When the first connecting side S5 and the second connecting side S6 are straight sides, the first side S1 and the third side S3 each form an obtuse angle with the first connecting side S5, and the second side S2 and the fourth side S4 each form an obtuse angle with the second connecting side S6. In this way, the current path can be lengthened, and the insertion loss can be reduced.

[0093] In some examples, the radiation units 23 include a conductive grid structure, and when the radiation units 23 include the first radiation unit 232a, the second radiation unit 232b, the third radiation unit 232c, and the fourth radiation unit 232d, the first radiation unit 232a, the second radiation unit 232b, the third radiation unit 232c, and the fourth radiation unit 232d each adopt the conductive grid structure.

[0094] The first radiation unit 232a, the second radiation unit 232b, the third radiation unit 232c, and the fourth radiation unit 232d are arranged on the fifth substrate, and the fifth substrate is attached to the third substrate 231. Specifically, the fifth substrate can also be made of the flexible material described above, such as a PET substrate. The fifth substrate can be attached to the third substrate 231 by OCA glue, and the third substrate 231 can be made of polycarbonate plastic, cyclic olefin polymer plastic, or acrylic / organic glass, but is not limited thereto.

[0095] It should be noted that the above only takes the first balun feed line 212 and the first reference electrode 213 in the first balun assembly 21, the second balun feed line 222 and the second reference electrode 223 in the second balun assembly 22, and the conductive grid of the radiation units 23 as examples for description. In actual products, the first balun feed line 212 and the first reference electrode 213 in the first balun assembly 21, the second balun feed line 222 and the second reference electrode 223 in the second balun assembly 22, and the radiation units 23 can also adopt a solid conductive structure, such as a conductive structure made of copper metal material.

[0096] Figure 16 The S-parameter characteristic diagram of the radiation structure 2 of the embodiment of the present disclosure. As shown in FIG. 6, the S-parameter characteristic diagram of the radiation structure 2 of the embodiment of the present disclosure is shown. Figure 16As shown, the radiation structure 2 of the embodiment of the present disclosure can achieve a return loss of less than -17.5 dB in the frequency band of 1.7-2.7 GHz, and the isolation is higher than 25 dB.

[0097] Figure 17 The vertical E-plane pattern of the radiation structure 2 of the embodiment of the present disclosure at the center frequency is shown in the figure. Figure 17 As shown, the radiation structure 2 of the embodiment of the present disclosure can achieve a unit radiation gain of higher than 7.6 dBi, and has a 3dB beam width of 70±1 degrees.

[0098] Figure 18 The cross-polarization ratio of the radiation structure 2 of the embodiment of the present disclosure at the center frequency is shown in the figure. Figure 18 As shown, the axial cross-polarization ratio of the radiation structure 2 of the embodiment of the present disclosure can achieve an excellent performance of higher than 28 dB, and the cross-polarization characteristics are higher than 7 dB within the range of ±60 degrees.

[0099] When the first power divider and the second power divider of the embodiment of the present disclosure both adopt a one-to-five unequal power divider, the size of the one-to-five unequal power divider is 480mm×38mm (3.53λ c ×0.28λ c ). The port spacing of each first feeding end and second feeding end is 90-100mm (0.66λ c -0.73λ c ). The one-to-five unequal power divider is composed of one set of one-to-three unequal power division and one set of one-to-two equal power division through one set of one-to-two unequal power division network. The second feeding port can be an input port, and the five first feeding ports are output ports, and the characteristic impedance of the output ports is 50 ohms. Figure 19 The S11 characteristic diagram of the one-to-five unequal power divider in the embodiment of the present disclosure is shown in the figure. Figure 19 As shown, the one-to-five unequal power divider in the embodiment of the present disclosure has a return loss of -20 dB in the working frequency band.

[0100] Figure 20 The power distribution characteristic diagram of the one-to-five unequal power divider in the embodiment of the present disclosure is shown in the figure. Figure 20 As shown, in order to suppress the sidelobe characteristics of the synthesized beam, the third first feeding port in the power divider has the highest power distribution, and is higher than the power ratio of the remaining output ports by 1 dB±0.5 dB. Figure 21 The phase difference characteristic diagram between each output end of the one-to-five unequal power divider in the embodiment of the present disclosure is shown in the figure. Figure 21 As shown, the phase difference between each output port under the center frequency of the antenna in the embodiment of the present disclosure is less than 1.5 degrees, which greatly improves the beam superposition and synthesis effect.

[0101] Figure 22This is a diagram showing the S-parameter characteristics of the antenna according to an embodiment of this disclosure; as follows: Figure 22 As shown, the antenna of this embodiment can achieve echo characteristics below -15dB within the range of 1.7 to 2.7 GHz. However, the isolation is less than 20dB.

[0102] In some examples, Figure 23 This is a cross-sectional view of the first balun component 21 according to an embodiment of this disclosure; Figure 24 This is a cross-sectional view of the second balun component 22 according to an embodiment of this disclosure. Figure 23 and 24 As shown, the first balun assembly 21 and the second balun assembly 22 in the radiating structure 2 can be made of printed circuit boards, i.e., PCB balun assemblies. That is, the first balun assembly 21 and the second balun assembly 22 do not need to use an architecture including a conductive mesh structure. In the antenna, a first protective layer 24 and a second protective layer 25 are respectively provided on two opposite sides of the first balun assembly 21 along its thickness direction; a third protective layer 26 and a fourth protective layer 27 are respectively provided on two opposite sides of the second balun assembly 22 along its thickness direction. The materials of the first protective layer 24, the second protective layer 25, the third protective layer 26, and the fourth protective layer 27 all include white or green oil, thereby enabling the entire transparent antenna array to achieve low visibility or even concealment indoors.

[0103] In some examples, Figure 25A A top view showing the isolation of the antenna in this embodiment; Figure 25B A top view of an isolation assembly introduced in another embodiment of the present invention; as shown Figure 25A and Figure 25B As shown, the antenna in this embodiment not only includes the structure described above, but also includes an isolation component 8 disposed between at least partially adjacent radiating elements 23. The isolation of the antenna is improved by the isolation component 8. The specific location and number of the isolation components 8 in the antenna can be determined based on antenna simulation results and cost considerations. For example: Figure 25A As shown in the embodiment of this disclosure, in the antenna comprising five radiating structures 2, an isolation component 8 can be provided between the radiating elements 23 of the first radiating structure 2 and the radiating elements 23 of the second radiating structure 2, and between the radiating elements 23 of the fourth radiating structure 2 and the radiating elements 23 of the fifth radiating structure 2. For example: Figure 25A As shown, an isolation component 8 is provided between adjacent radiating units 23. The isolation component 8 can be an isolation strip, meaning it has a strip-shaped structure. The isolation component 8 can be installed on the same layer as the radiating unit.

[0104] When the length of the introduced isolation component 8 is approximately 110 mm (0.8λ) c )hour,Figure 26 The isolation performance comparison chart before and after introducing the isolation component 8 for the antenna of the embodiment of the present disclosure is shown. As shown, after introducing the Mesh isolation component 8, the isolation of the antenna of the embodiment of the present disclosure can achieve an isolation characteristic higher than 23.5 dB in the entire frequency band, which is about 3.5 dB higher than the isolation before introducing the isolation component 8. Figure 26

[0105] In some examples, Figure 27 The front view of the antenna of the embodiment of the present disclosure is shown. As shown, the antenna of the embodiment of the present disclosure not only includes the above structure, but also can include a radome 9, and the first substrate 1, the plurality of radiation structures 2, the first feeding structure 3 and the second feeding structure 4 are all placed in the radome 9. Figure 27

[0106] Further, the second substrate 5 integrated with the first feeding structure 3 and the second feeding structure 4 can have a certain angle compared with the first substrate 1, that is, the plane where the second substrate 5 is located and the plane where the first substrate 1 is located are not parallel, for example, the plane where the second substrate 5 is located and the plane where the first substrate 1 are perpendicular to each other. In the embodiment of the present disclosure, only the case where the second substrate 5 and the first substrate 1 are perpendicular to each other is taken as an example, and in this way, the transparency of the antenna can be further improved.

[0107] Further, when the second substrate 5 and the first substrate 1 are arranged perpendicular to each other, the second substrate 5 can be fixed on the radome 9. The second substrate 5 is fixed on the radome 9, in order to facilitate the connection of the first feeding structure 3 and the second feeding structure 4 with the first balun component 21 and the second balun component 22 respectively, a hole can be punched on the radome 9, and the first feeding structure 3 and the first balun component 21 are connected by welding, and the second feeding structure 4 and the second balun component 22 are connected by welding.

[0108] The embodiment of the present disclosure provides an antenna array, which includes the above-mentioned antenna 100.

[0109] Figure 28A The schematic view of the antenna array of the embodiment of the present disclosure is shown. As shown, the antenna array includes two groups of the above-mentioned antenna 100, and the two groups of antennas 100 are arranged in an up-down manner and symmetrically arranged. Taking the size of the antenna array as 40mmx300mmx63mm(3.97λ c x2.2λ c x0.46λ c ), the transparent area ratio is higher than 70% as an example. Figure 28A The gain characteristic chart of the antenna array of the embodiment of the present disclosure is shown. As shown, Figure 29 The gain characteristic chart of the antenna array of the embodiment of the present disclosure is shown. As shown, Figure 29 ​​As shown, the antenna array of the embodiment of the present disclosure has an excellent gain of higher than 12.6dBi in the working frequency band. Meanwhile, the peak gain can reach 14dBi. This provides a strong guarantee for the signal coverage sensitivity between buildings.

[0110] Continue Figure 28A In Figure 28A two groups of antennas 100 are arranged in an up-down manner and symmetrically arranged, and in this case, the isolation components 8 in the two groups of antennas 100 are symmetrically arranged. Figure 28B The schematic diagram of another antenna array of the embodiment of the present disclosure is shown in FIG. 3. As shown, the structures of the two groups of antennas 100 except the isolation components 8 are symmetrically arranged, and the isolation components 8 in the two groups of antennas 100 are arranged at different positions. In one group of antennas 100, only two isolation components 8 are arranged, and in the other group of antennas 100, isolation components 8 are arranged between any two adjacent antenna units. It should be noted that the arrangement of the positions of the isolation components 8 can be specifically arranged according to the simulation results of the antenna array. Figure 28B

[0111] The embodiment of the present disclosure provides an electronic device, which comprises an antenna.

[0112] The antenna further comprises a transceiving unit, a radio frequency transceiver, a signal amplifier, a power amplifier, and a filter unit. The antenna can be used as a transmitting antenna or a receiving antenna. The transceiving unit can comprise a baseband and a receiving end. The baseband provides signals of at least one frequency band, such as 2G signals, 3G signals, 4G signals, 5G signals, etc., and transmits the signals of at least one frequency band to the radio frequency transceiver. After the transparent antenna in the communication system receives the signals, the signals can be transmitted to the receiving end in the transceiving unit after being processed by the filter unit, the power amplifier, the signal amplifier, and the radio frequency transceiver (not shown in the figure). The receiving end can be a smart gateway, etc.

[0113] Further, the radio frequency transceiver is connected to the transceiving unit, and is used for modulating the signals transmitted by the transceiving unit, or for demodulating the signals received by the transparent antenna and then transmitting the signals to the transceiving unit. Specifically, the radio frequency transceiver can comprise a transmitting circuit, a receiving circuit, a modulation circuit, and a demodulation circuit. After the transmitting circuit receives various types of signals provided by the baseband, the modulation circuit can modulate the various types of signals provided by the baseband, and then transmit the signals to the antenna. The transparent antenna receives the signals and transmits the signals to the receiving circuit of the radio frequency transceiver. The receiving circuit transmits the signals to the demodulation circuit, and the demodulation circuit demodulates the signals and then transmits the signals to the receiving end.

[0114] ​Further, the radio frequency transceiver is connected with the signal amplifier and the power amplifier, the signal amplifier and the power amplifier are connected with the filter unit, and the filter unit is connected with at least one antenna. In the process of transmitting signals by the communication system, the signal amplifier is used to improve the signal-to-noise ratio of the signal output by the radio frequency transceiver and then transmit the signal to the filter unit; the power amplifier is used to amplify the power of the signal output by the radio frequency transceiver and then transmit the signal to the filter unit; the filter unit can specifically include a duplexer and a filter circuit, the filter unit combines and filters the signals output by the signal amplifier and the power amplifier and then transmits the signals to the transparent antenna, and the antenna radiates the signals. In the process of receiving signals by the communication system, the antenna receives the signals and then transmits the signals to the filter unit, the filter unit filters the signals received by the antenna and then transmits the signals to the signal amplifier and the power amplifier, the signal amplifier increases the gain of the signals received by the antenna and increases the signal-to-noise ratio of the signals, and the power amplifier amplifies the power of the signals received by the antenna. The signals received by the antenna are processed by the power amplifier and the signal amplifier and then transmitted to the radio frequency transceiver, and the radio frequency transceiver transmits the signals to the transceiver unit.

[0115] In some examples, the signal amplifier can include various types of signal amplifiers, such as a low-noise amplifier, without limitation.

[0116] In some examples, the antenna provided by the embodiments of the present disclosure further includes a power management unit, and the power management unit is connected with the power amplifier and provides a voltage for the power amplifier to amplify signals.

[0117] It can be understood that the above implementation is only an exemplary implementation adopted for illustrating the principles of the present application, and the present application is not limited thereto. Various modifications and improvements can be made by those skilled in the art without departing from the spirit and essence of the present application, and these modifications and improvements are also considered to be within the protection scope of the present application.

Claims

1. An antenna comprising a first substrate, a plurality of radiating structures, a first feeding structure, and a second feeding structure; characterized in that, The radiating structure includes a first balun assembly and a second balun assembly, as well as a radiating unit; the first balun assembly and the second balun assembly are arranged crosswise and are mounted on the first substrate; the radiating unit is disposed at one end of the first balun assembly and the second balun assembly away from the first substrate. The first feeding structure feeds the radiating unit through the first balun component, and the second feeding structure feeds the radiating unit through the second balun component, and the feeding directions of the first feeding structure and the second feeding structure are different.

2. The antenna according to claim 1, characterized in that, The first balun assembly includes a first substrate, a first balun feed line disposed on the first substrate, and a first reference electrode disposed on the side of the first substrate away from the first balun feed line layer; the second balun assembly includes a second substrate, a second balun feed line disposed on the second substrate, and a second reference electrode disposed on the side of the second substrate away from the second balun feed line layer; the first substrate and the second substrate are disposed intersecting.

3. The antenna according to claim 2, characterized in that, The first balun feed line is disposed on the first substrate, which is attached to the first substrate; the first reference electrode is disposed on the second substrate, which is attached to the first substrate. The second balun feed line is disposed on the third substrate, which is attached to the second substrate; the second reference electrode is disposed on the fourth substrate, which is attached to the second substrate.

4. The antenna according to claim 1, characterized in that, Both the first balun assembly and the second balun assembly are printed circuit boards; a first protective layer and a second protective layer are respectively provided on two opposite sides of the first balun assembly along its thickness direction; a third protective layer and a fourth protective layer are respectively provided on two opposite sides of the second balun assembly along its thickness direction.

5. The antenna according to claim 4, characterized in that, The materials of the first protective layer, the second protective layer, the third protective layer, and the fourth protective layer all include white oil or green oil.

6. The antenna according to any one of claims 1-5, characterized in that, The antenna includes a second substrate, and the first feeding structure includes a first power divider disposed on the second substrate and a third reference electrode disposed on the side of the second substrate opposite to the first power divider. The second power supply structure includes a second power divider disposed on the second substrate and a fourth reference electrode disposed on the side of the second substrate opposite to the second power divider. The third reference electrode and the fourth reference electrode are electrically connected; A first feed terminal of the first power divider is configured to feed a first balun component; A first feed terminal of the second power divider is configured to feed a second balun component.

7. The antenna according to claim 6, characterized in that, The extension direction of the plane containing the second substrate is different from the extension direction of the plane containing the first substrate.

8. The antenna according to claim 6, characterized in that, The first substrate and the second substrate are shared. The first reference electrode of the first balun assembly is connected to the third reference electrode through a first via penetrating the first substrate. The second reference electrode of the second balun assembly is connected to the third reference electrode through a first via penetrating the first substrate.

9. The antenna according to claim 6, characterized in that, The radiating structure also includes a first transmission line and a second transmission line disposed on the first substrate. One of the first feed terminals of the first power divider is connected to the first balun feed line of the first balun component via the first transmission line; one of the first feed terminals of the second power divider is connected to the second balun feed line of the second balun component via the second transmission line.

10. The antenna according to claim 9, characterized in that, The first power divider's first feed terminal is connected to the first transmission line via a first connection component, and the second power divider's first feed terminal is connected to the second transmission line via a second connection component.

11. The antenna according to claim 9, characterized in that, The first transmission line and the second transmission line include a conductive mesh structure.

12. The antenna according to claim 1, characterized in that, The first balun component and the second balun component are arranged in an alternating manner, and the first reference electrode of the first balun component is divided into a first sub-reference electrode and a second sub-reference electrode, and the second reference electrode of the second balun component is divided into a third sub-reference electrode and a fourth sub-reference electrode. The radiation unit includes a third substrate and a first radiation portion, a second radiation portion, a third radiation portion and a fourth radiation portion disposed on the side of the third substrate facing away from the first substrate; The first sub-reference electrode is connected to the first radiating part through a third via penetrating the third substrate and the first radiating part; the second sub-reference electrode is connected to the second radiating part through a fourth via penetrating the third substrate and the second radiating part; the third sub-reference electrode is connected to the third radiating part through a fifth via penetrating the third substrate and the third radiating part; and the fourth sub-reference electrode is connected to the fourth radiating part through a sixth via penetrating the third substrate and the fourth radiating part.

13. The antenna according to claim 12, wherein, The first radiating part, the second radiating part, the third radiating part and the fourth radiating part all include a conductive mesh structure.

14. The antenna according to claim 12, characterized in that, The first radiating part, the second radiating part, the third radiating part and the fourth radiating part are disposed on the fifth substrate; the fifth substrate is attached to the third substrate.

15. The antenna according to claim 12, characterized in that, The orthographic projections of the first radiating part, the second radiating part, the third radiating part, and the fourth radiating part on the third substrate all include polygons; the polygons include a first side and a second side disposed opposite to each other, a third side and a fourth side disposed opposite to each other, and a first connecting side connecting the first side and the third side, and a second connecting side connecting the second side and the fourth side. The angles formed by the first connecting edge and the first side edge, the angles formed by the first connecting edge and the third side edge, the angles formed by the second connecting edge and the second side edge, and the angles formed by the second connecting edge and the fourth side edge are all obtuse angles; or, The first connecting edge and the second connecting edge are curved edges.

16. The antenna according to claim 1, characterized in that, An isolation component is provided between at least some of the adjacent radiating units.

17. The antenna according to claim 1, characterized in that, It also includes an antenna radome, in which the first substrate, the plurality of radiating structures, the first feeding structure and the second feeding structure are all placed within the antenna radome.

18. The antenna according to claim 11 or 13, characterized in that, The conductive mesh structure includes multiple first conductive lines and second conductive lines arranged in a cross pattern; the line width of the first conductive lines and the second conductive lines are both 2-30μm, the line spacing is 5-200μm, and the line thickness is 1-10μm.

19. An antenna array comprising a plurality of antennas, characterized in that, The antenna unit adopts the antenna described in any one of claims 1-18.

20. An electronic device, characterized in that, Includes the antenna array as described in claim 19.

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